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October 2016

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Subject:
From:
Joyce Koo <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 5 Oct 2016 15:29:53 -0400
Content-Type:
text/plain
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text/plain (150 lines)
be careful, if your stuff is not clean, some of organometallic catalyst
may get poisoned (your coating may not be cured).
> Doug, have you ever used their recommended catalyst agents when baking it?
>
> Lloyd Duso
> Plant Manager
> Diamond-MT
> (814) 535-3505
> www.Diamond-mt.com
>
> On Wed, Oct 5, 2016 at 2:07 PM, Douglas Pauls <
> [log in to unmask]> wrote:
>
>> Good point.  The 1-2620 is a bit thinner and flows well.  If you are
>> going
>> to spray coat, use Dow Cornings OS series of solvents.  I would
>> recommend
>> using the OS-30, which is slower evaporating than either the OS-10
>> (fast)
>> or OS-20 solvents (medium).
>>
>>
>> Doug Pauls
>> Principal Materials and Process Engineer
>> Rockwell Collins
>>
>> On Wed, Oct 5, 2016 at 11:48 AM, lduso - Diamond-MT.com <
>> [log in to unmask]> wrote:
>>
>>> We've never tried baking it but leaving it out before baking will
>>> definitely help. Funny story: Had a customer hand us a spec to follow
>>> for
>>> using 1-2577. The spec stated that "The coating facility should
>>> maintain
>>> 15-25% RH when using 1-2577" We politely refused.....and recommended
>>> Wyle
>>> E. Coyote's facility in AZ.
>>>
>>> Another option is 1-2620---basically a pre-thinned (150 cp) version of
>>> 1-2577 for easier spraying.
>>>
>>> Lloyd Duso
>>> Plant Manager
>>> Diamond-MT
>>> (814) 535-3505
>>> www.Diamond-mt.com
>>>
>>> On Wed, Oct 5, 2016 at 11:43 AM, Douglas Pauls <
>>> [log in to unmask]> wrote:
>>>
>>>> Good point.  We usually let them dry overnight at ambient conditions
>>>> before
>>>> baking.  The longer you leave a coating to evolve the solvent gently,
>>>> the
>>>> less chance of bubbles.  We apply it pretty thick and leaving a long
>>>> ambient drying time allows us to do it bubble free.
>>>>
>>>>
>>>> Doug Pauls
>>>> Principal Materials and Process Engineer
>>>> Rockwell Collins
>>>>
>>>> On Wed, Oct 5, 2016 at 10:18 AM, Wayne Thayer - EXT <
>>>> [log in to unmask]
>>>> > wrote:
>>>>
>>>> > When baking 1-2577 be real careful: If it is cured too quickly
>>>> (depends on
>>>> > thickness) then it will trap lots of solvent bubbles.
>>>> >
>>>> > From: Douglas Pauls [mailto:[log in to unmask]]
>>>> > Sent: Wednesday, October 05, 2016 8:16 AM
>>>> > To: TechNet E-Mail Forum; Wayne Thayer - EXT
>>>> > Subject: Re: [TN] Silicone Conformal Coating supplier
>>>> >
>>>> > Dean,
>>>> > We use Dow Corning 1-2577 as our approved silicone and it has always
>>>> > worked well for us.  It is about 20-30% toluene, so it is a VOC, but
>>>> if
>>>> > memory serves, there are low VOC versions of 1-2577 out there.
>>>> While
>>>> it
>>>> > does have a relatively quick tack time, you may want to bake it a
>>>> while to
>>>> > drive the cure reaction and improve adhesion.
>>>> >
>>>> >
>>>> > Doug Pauls
>>>> > Principal Materials and Process Engineer
>>>> > Rockwell Collins
>>>> >
>>>> > On Wed, Oct 5, 2016 at 10:08 AM, Wayne Thayer - EXT <
>>>> > [log in to unmask]<mailto:[log in to unmask]>> wrote:
>>>> > Isn't that stuff about half toluene?
>>>> >
>>>> > Really--I love 1-2577 too, but won't it cause all of the "VOCs"
>>>> alarms
>>>> in
>>>> > the county to go off at once?
>>>> >
>>>> > Wayne Thayer
>>>> >
>>>> > -----Original Message-----
>>>> > From: TechNet [mailto:[log in to unmask]<mailto:[log in to unmask]>] On
>>>> Behalf
>>>> > Of lduso - Diamond-MT.com
>>>> > Sent: Wednesday, October 05, 2016 7:54 AM
>>>> > To: [log in to unmask]<mailto:[log in to unmask]>
>>>> > Subject: Re: [TN] Silicone Conformal Coating supplier
>>>> >
>>>> > 90% of our customers (DOD & commercial) call out Dow 1-2577. A good
>>>> all
>>>> > around SR that is extremely easy to apply, t/u, rework and has a
>>>> very
>>>> quick
>>>> > "dry" time of a mere 20 minutes @ room temp. Others are MG Chemicals
>>>> and
>>>> > Humiseal.
>>>> >
>>>> > Lloyd Duso
>>>> > Plant Manager
>>>> > Diamond-MT
>>>> > (814) 535-3505<tel:%28814%29%20535-3505>
>>>> > www.Diamond-mt.com<http://www.Diamond-mt.com>
>>>> >
>>>> > On Wed, Oct 5, 2016 at 10:48 AM, Stadem, Richard D. <
>>>> > [log in to unmask]<mailto:[log in to unmask]>> wrote:
>>>> >
>>>> > > I have a client who needs to qualify a silicone coating, either an
>>>> > > oven cure or UV cure coating. I am looking for a good supplier or
>>>> > distributor.
>>>> > > If any of you coating experts would care to share your favorites
>>>> with
>>>> > > me, I would greatly appreciate it, as I am not an expert on
>>>> sources
>>>> of
>>>> > > coatings (best pricing, service, stocking, etc.) Feel free to
>>>> contact
>>>> > > me directly by answering this email.
>>>> > > Thanks for any info you feel comfortable sharing.
>>>> > > dean
>>>> > >
>>>> >
>>>> >
>>>>
>>>
>>>
>>
>

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